Changes between Version 72 and Version 73 of BackwardsIncompatibleChanges

Timestamp:

Jan 28, 2007, 7:11:58 PM (18 years ago)

Author:

Adrian Holovaty

Comment:

Added "Changed prepopulate_from to be defined in the Admin class, not database field classes"

BackwardsIncompatibleChanges

@@ -40 +40 @@
  * September 27, 2006: [http://code.djangoproject.com/wiki/BackwardsIncompatibleChanges#RemovedENABLE_PSYCOsetting Removed ENABLE_PSYCO setting]
  * January 16, 2007: [http://code.djangoproject.com/wiki/BackwardsIncompatibleChanges#ChangedAdmin.manageroptiontomoreflexiblehook Changed Admin.manager option to more flexible hook]
+ * January 28, 2007: [http://code.djangoproject.com/wiki/BackwardsIncompatibleChanges#Changedprepopulate_fromtobedefinedintheAdminclassnotdatabasefieldclasses Changed prepopulate_from to be defined in the Admin class, not database field classes]
 
 == Moved mod_python handler ==
@@ -610 +611 @@
 
 Note that this change was made to the NewformsAdminBranch branch, which is scheduled to merge to trunk by January 31. The change will not be made to trunk until that branch is merged to trunk.
+
+== Changed prepopulate_from to be defined in the Admin class, not database field classes ==
+
+As of [4446], the {{{prepopulate_from}}} option to database fields no longer exists. It's been discontinued in favor of the new {{{prepopulated_fields}}} option on {{{class Admin}}}. The new {{{prepopulated_fields}}} option, if given, should be a dictionary mapping field names to lists/tuples of field names. Here's an example comparing old syntax and new syntax:
+
+{{{
+#!python
+
+# OLD:
+class MyModel(models.Model):
+    first_name = models.CharField(maxlength=30)
+    last_name = models.CharField(maxlength=30)
+    slug = models.CharField(maxlength=60, prepopulate_from=('first_name', 'last_name'))
+
+    class Admin:
+        pass
+
+# NEW:
+class MyModel(models.Model):
+    first_name = models.CharField(maxlength=30)
+    last_name = models.CharField(maxlength=30)
+    slug = models.CharField(maxlength=60, prepopulate_from=('first_name', 'last_name'))
+
+    class Admin:
+        prepopulated_fields = {'slug': ('first_name', 'last_name')}
+}}}
+
+Note that this change was made to the NewformsAdminBranch branch, which is scheduled to merge to trunk by January 31. The change will not be made to trunk until that branch is merged to trunk.